JPH0359930A - Color television picture tube - Google Patents

Color television picture tube

Info

Publication number
JPH0359930A
JPH0359930A JP1195211A JP19521189A JPH0359930A JP H0359930 A JPH0359930 A JP H0359930A JP 1195211 A JP1195211 A JP 1195211A JP 19521189 A JP19521189 A JP 19521189A JP H0359930 A JPH0359930 A JP H0359930A
Authority
JP
Japan
Prior art keywords
black light
layer
fluorescent material
light absorbing
phosphor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1195211A
Other languages
Japanese (ja)
Inventor
Takeo Ito
武夫 伊藤
Shuzo Matsuda
秀三 松田
Kazuhiko Shimizu
和彦 清水
Hajime Tanaka
肇 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP1195211A priority Critical patent/JPH0359930A/en
Priority to EP90114172A priority patent/EP0410386B1/en
Priority to DE69008636T priority patent/DE69008636T2/en
Priority to US07/557,066 priority patent/US5045750A/en
Priority to CN90104993A priority patent/CN1018407B/en
Priority to KR1019900011607A priority patent/KR910003737A/en
Publication of JPH0359930A publication Critical patent/JPH0359930A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • H01J29/327—Black matrix materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To effectively raise the color purity of a color television picture tube and also obtain a large enhancement of the brightness of the tube by providing a black light absorbing layer located in a space defined between fluorescent material layers with a non-fluorescent material layer portion of predetermined width comprising only the black light absorbing layer, and an overlapping portion of predetermined width, where the edge portion of each fluorescent material layer is on the black light absorbing layer at the edge portion of the non fluorescent material layer portion. CONSTITUTION:A black light absorbing layer 14 is semi-transparent and at least one space 15 is defined between adjacent fluorescent material layers 13B, 13G, 13R and the black light absorbing layer 14 located in the space 15 is provided with a non fluorescent material layer portion 14a of predetermined width comprising only the black light absorbing layer, and an overlapping portion 14b of predetermined width, where the edge portion of each fluorescent material layer 13B, 13G, 13R is on the black light absorbing layer at the edge portion of the non-fluorescent material layer portion 14a. In this case, the black light absorbing layer 14 has only a guardband function at its non-fluorescent material layer portion 14a, while at its overlapping portion 14b it contributes in light emission and has a guardband function to some extent. Since thus the fluorescent material layer does not exist in the space 15 between the fluorescent material layers 13B, 13G, 13R, in which space mislanding is likely to occur, the color purity of the color television picture tube is raised to enhance the brightness of the tube.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、カラー受像管、特に、その蛍光体スクリーン
に関する。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Field of Industrial Application) The present invention relates to a color picture tube, and in particular to a phosphor screen thereof.

（従来の技術） 第２図は一般的なカラー受像管を示しており、ガラスか
らなる外囲器１は、パネル２にファンネ／ｌ／３カ一体
に接合され、このファンネル３にネック部４が設けられ
ている。そして、この外囲器１のネック部４内に、複数
の電子ビーム５を射出、集束する電子銃６が配設され、
この電子銃６と対向して外囲器１のパネル２の内面に蛍
光体スクリーン７が形成され、この蛍光体スクリーン７
の内側にシャドウマスク構体８が配設されている。この
シャドウマスク構体８は、前記電子銃６からの電子ビー
ム５が通過する多数の電子ビーム通過孔９を有するシャ
ドウマスク１０が矩形枠状のマスクフレーム１１の前面
部に固定され、このマスクフレーム１１の４辺の外側に
フレーム支持体１２が固定されている。このフレーム支
持体１２は、前記パネル２の内側壁に突設した図示しな
いピンに係合してマスクフレーム１１を外囲器１内に支
持し、さらに、シャドウマスクＩＯを蛍光体スクリーン
７に近接対向して、かつ、シャドウマスク１０と蛍光体
スクリーン７が所定の間隔を保つように保持している。(Prior Art) FIG. 2 shows a general color picture tube, in which an envelope 1 made of glass is integrally joined to a panel 2 with a funnel 3 and a neck 4. is provided. An electron gun 6 that emits and focuses a plurality of electron beams 5 is disposed within the neck portion 4 of the envelope 1.
A phosphor screen 7 is formed on the inner surface of the panel 2 of the envelope 1 facing the electron gun 6.
A shadow mask structure 8 is disposed inside. In this shadow mask structure 8, a shadow mask 10 having a large number of electron beam passing holes 9 through which the electron beam 5 from the electron gun 6 passes is fixed to the front part of a rectangular frame-shaped mask frame 11. A frame support 12 is fixed to the outside of the four sides. The frame support 12 engages with pins (not shown) protruding from the inner wall of the panel 2 to support the mask frame 11 within the envelope 1, and also moves the shadow mask IO close to the phosphor screen 7. The shadow mask 10 and the phosphor screen 7 are held so as to face each other and maintain a predetermined distance therebetween.

なお、図示しないが、前記ファンネル３からネック部４
の外壁にかけて電子ビーム５を偏向走査する偏向ヨーク
が装着されている。Although not shown, from the funnel 3 to the neck portion 4
A deflection yoke for deflecting and scanning the electron beam 5 is attached to the outer wall of the electron beam.

前記蛍光体スクリーン７は、第３図に示すように、青、
緑、赤の各色にそれぞれ発光する蛍光体層１３Ｂ　、　
　１３Ｇ　、　　１３Ｒがストライプ状またはドツト状
に形成されていると共に、この各蛍光体層１３Ｂ　、　
１３Ｇ　、　１３Ｒ間にカーボンなどを主成分とする黒
色光吸収層１４がストライプ状またはマトリックス状に
形成されている。As shown in FIG. 3, the phosphor screen 7 has blue,
A phosphor layer 13B that emits light in each color of green and red,
13G and 13R are formed in a stripe or dot shape, and each phosphor layer 13B,
A black light absorbing layer 14 mainly composed of carbon or the like is formed between 13G and 13R in the form of a stripe or matrix.

そして、電子銃６から射出された電子ビーム５がシャド
ウマスク１０に形成された電子ビーム通過孔９を通過し
た後、このシャドウマスク（θに対向位置するパネル２
の内面の蛍光体スクリーン７、すなわち、青、緑、赤の
それぞれの色に発光する蛍光体層１３Ｂ　、　１３Ｇ　
、　１３Ｒに射突し、これら各蛍光体層１３Ｂ　、　１
３Ｇ　、　１３Ｒを発光させて、画像を映出する。After the electron beam 5 emitted from the electron gun 6 passes through the electron beam passage hole 9 formed in the shadow mask 10, the shadow mask (the panel 2 opposite to θ
phosphor screen 7 on the inner surface of , that is, phosphor layers 13B and 13G that emit light in blue, green, and red colors
, 13R, and these respective phosphor layers 13B, 1
3G and 13R are emitted to project an image.

上記のように、カラー受像管においては、３色の蛍光体
層１３Ｂ　、　１３Ｇ　、　１３Ｒをストライプ状また
はドツト状とし、そのストライプ状またはドツト状の蛍
光体層１３Ｂ　、　１３Ｇ　、　１３Ｒの間に、外光の
反射を防止して画像のコントラストを良好にする非発光
層としての黒色光吸収層１４を形成したブラックストラ
イプ型またはブラックマトリックス型としたものが広く
用いられている。As mentioned above, in the color picture tube, the three color phosphor layers 13B, 13G, 13R are formed into stripes or dots, and between the stripes or dots phosphor layers 13B, 13G, 13R, an outer layer is formed. A black stripe type or black matrix type in which a black light absorbing layer 14 is formed as a non-emissive layer to prevent light reflection and improve image contrast is widely used.

そして、この型式のカラー受像管において、特開昭５２
−７４２７４号公報には、第４図に示すように、黒色光
吸収層１４の光透過率を５〜４０％とすることにより、
大幅な輝度の向上をはかる方法が提案されている。In this type of color picture tube, Japanese Patent Application Laid-open No. 52
-74274, as shown in FIG. 4, by setting the light transmittance of the black light absorption layer 14 to 5 to 40%,
Methods have been proposed to significantly improve brightness.

（発明が解決しようとする課題） 上記黒色光吸収層は、電子ビームのミスランディングの
影響を吸収するいわゆるガートバンド部としての機能を
有しているため、単に黒色光吸収層を半透明とすると、
色純度や、単色余裕度の低下を生じ、実用上支障を来た
すことになる。(Problem to be Solved by the Invention) Since the black light absorption layer has a function as a so-called guard band portion that absorbs the influence of mislanding of the electron beam, if the black light absorption layer is simply made semitransparent, ,
This results in a decrease in color purity and monochromatic margin, which poses a practical problem.

本発明は、このような点を解決しようとするもので、色
純度や、単色余裕度の低下を防止しつつ、大幅な輝度の
向上を与える蛍光体スクリーンを持つカラー受像管を提
供することを目的とするものである。The present invention aims to solve these problems by providing a color picture tube with a phosphor screen that significantly improves brightness while preventing a decrease in color purity and monochromatic margin. This is the purpose.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 本発明は、青、緑、赤の各色にそれぞれ発光する蛍光体
層をストライプ状またはドツト状に形成すると共に、こ
の各蛍光体層間に黒色光吸収層をストライプ状またはマ
トリックス状に形成した蛍光体スクリーンを備えたカラ
ー受像管において、前記黒色光吸収層を半透明とし、か
つ、前記各蛍光体層の少なくとも一部の隣り合う蛍光体
層間に間隙を形成して、この間隙部分に位置する黒色光
吸収層には、黒色光吸収層のみの所定幅の無蛍光体層部
と、この無蛍光体層部の縁部で蛍光体層の縁部と重なっ
た所定幅の重合部とを設けたものである。(Means for Solving the Problems) The present invention forms phosphor layers that emit light in blue, green, and red colors in a stripe or dot shape, and a black light absorbing layer is provided in stripes between each of the phosphor layers. In a color picture tube equipped with a phosphor screen formed in a shape or a matrix, the black light absorbing layer is semitransparent, and a gap is formed between at least some of the adjacent phosphor layers of each of the phosphor layers. The black light absorbing layer located in this gap has a non-phosphor layer portion of a predetermined width consisting only of the black light absorbing layer, and an edge of the non-phosphor layer that overlaps the edge of the phosphor layer. An overlapping portion with a predetermined width is provided.

（作用） 本発明では、黒色光吸収層は、その無蛍光体肩部では単
にガートバンド機能のみを有し、重合部では発光に寄与
すると共に、ある程度のガートバンド機能を有する。こ
れによって、最もミスランディングの可能性の高い各蛍
光体層間の間隙では蛍光体層が存在しないため、色純度
の低下を生ぜず、充分なガートバンド機能を確保でき、
色純度を効果的に上げる。(Function) In the present invention, the black light absorption layer has only a guard band function at its non-phosphor shoulder portion, and contributes to light emission and has a guard band function to some extent at its polymerized portion. As a result, there is no phosphor layer in the gaps between each phosphor layer where mislanding is most likely to occur, so there is no drop in color purity and sufficient guard band function can be ensured.
Effectively increases color purity.

また、重合部には蛍光体層があるが、半透明の黒色光吸
収層が存在するため、ある程度のガートバンド機能を果
しつつ、同時に輝度の向上に寄与し、大幅な輝度向上を
得る。In addition, although there is a phosphor layer in the polymerization part, since there is a translucent black light absorption layer, it functions as a guard band to some extent and at the same time contributes to improving the brightness, resulting in a significant improvement in brightness.

（実施例） 以下、本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.

なお、このカラー受像管も、基本的には、蛍光体スクリ
ーンを除いて前記第２図のカラー受像管と同様の構成を
備えているので、基本的構成部分の説明は省略する。This color picture tube also basically has the same structure as the color picture tube shown in FIG. 2, except for the phosphor screen, so a description of the basic components will be omitted.

第１図において、蛍光体スクリーン７は、パネル２の内
面に半透明物質からなる黒色光吸収層１４を所定間隔を
おいて規則的にストライプ状またはマトリックス状に塗
布形成し、この各黒色光吸収層１４間の開口部およびこ
の黒色光吸収層１４の縁部上にかけて青、緑、赤の各色
にそれぞれ発光する蛍光体層１３Ｂ　、　１３Ｇ　、　
１３Ｒを規則的にストライプ状またはドツト状に被着形
成する。すなわち、各蛍光体層１３Ｂ　、　１３Ｇ　、
　１３Ｒの隣り合う蛍光体層１３Ｂ　、　１３Ｇ　、　
１３Ｒは互いに接触せずにその間に間隙１５を形成して
、この間隙１５部分に位置するガートバンド部としての
半透明の黒色光吸収層１４には、黒色光吸収層１４のみ
の所定幅ａの無蛍光体層部１４ｇと、この無蛍光体層部
１４ａの縁部で蛍光体層１３Ｂ　、　１３Ｇ　、　１３
Ｒの縁部と重なった所定幅すの重合部１４ｂとを設ける
。In FIG. 1, the phosphor screen 7 has a black light absorbing layer 14 made of a translucent material coated on the inner surface of the panel 2 in the form of regular stripes or a matrix at predetermined intervals. Phosphor layers 13B, 13G, which emit light in blue, green, and red colors over the openings between the layers 14 and the edges of the black light absorption layer 14, respectively.
13R is deposited regularly in the form of stripes or dots. That is, each phosphor layer 13B, 13G,
13R adjacent phosphor layers 13B, 13G,
13R do not contact each other but form a gap 15 between them, and the translucent black light absorbing layer 14 as a guard band portion located in this gap 15 has a predetermined width a of only the black light absorbing layer 14. The non-phosphor layer portion 14g and the phosphor layers 13B, 13G, 13 at the edges of the non-phosphor layer portion 14a
An overlapping portion 14b of a predetermined width that overlaps the edge of R is provided.

このようにすることにより、黒色光吸収層１４は、その
無蛍光体層部１４ａでは単にガートバンド機能のみを有
し、重合部１４ｂでは発光に寄与すると共に、ある程度
のガートバンド機能を有する。By doing so, the black light absorption layer 14 has only a guard band function in its non-phosphor layer portion 14a, and contributes to light emission and has a guard band function to some extent in its overlapping portion 14b.

これによって、最もミスランディングの可能性の高い各
蛍光体層１３Ｂ　、　１３Ｇ　、　１３Ｒ間の間隙１５
では蛍光体層が存在しないため、色純度の低下を生ぜず
、前記従来の第４図に示した半透明の黒色光吸収層を有
するものに比し充分なガートバンド機能を確保でき、色
純度を効果的に上げる。As a result, the gaps 15 between each of the phosphor layers 13B, 13G, and 13R, which are most likely to cause mislanding, are
Since there is no phosphor layer, there is no reduction in color purity, and a sufficient guard band function can be ensured compared to the conventional one shown in FIG. 4, which has a translucent black light absorbing layer. effectively increase

また、重合部１４ｂには蛍光体層があるが、半透明の黒
色光吸収層１４が存在するため、ある程度のガートバン
ド機能を果しつつ、同時に輝度の向上に寄与することが
できるため、前記従来の第３図に示したものに比しわず
かの色純度の低下で大幅な輝度向上を得ることができる
。Further, although there is a phosphor layer in the polymerized portion 14b, since there is a translucent black light absorbing layer 14, it can function as a guard band to some extent and at the same time contribute to improving the brightness. Compared to the conventional device shown in FIG. 3, a significant improvement in brightness can be achieved with a slight decrease in color purity.

上記黒色光吸収層１４の無蛍光体層部１４ａの幅ａ１重
合部１４ｂの幅ｂ１隣り合う黒色光吸収層１４間の間隔
Ｃの割合は、ｃ＝４０〜８０％、ａ＝３〜５０％、２Ｘ
ｂ＝ａ、ｃの残部が好ましい。ａが３％未満であるとガ
ートバンド機能効果が薄くなり、５０％を越えると輝度
向上効果が少なくなる。The width a of the non-phosphor layer portion 14a of the black light absorption layer 14, the width b of the overlapping portion 14b, the ratio of the interval C between adjacent black light absorption layers 14, c=40 to 80%, a=3 to 50% , 2X
The remainder of b=a, c is preferred. If a is less than 3%, the guard band function effect will be weak, and if it exceeds 50%, the brightness improvement effect will be weak.

なお、実施にあたって、各蛍光体層１３Ｂ　。In addition, in implementation, each phosphor layer 13B.

１３Ｇ　、　１３Ｒ間に間隙１５を形成して、黒色光吸
収層１４に無蛍光体層部＋４８および重合部１４ｂを設
けるのは、蛍光体スクリーン７全面ではなくて、余裕度
が充分に必要な周辺部や中間部の一部のみに設けてもよ
く、また、少なくとも１色の蛍光体層、例えば、より色
純度の低下への影響が大きい緑色発光の蛍光体層１３Ｇ
の周囲のみに設けるようにしでもよく、これらの場合で
も上記効果を充分に得ることかできる。The gap 15 is formed between 13G and 13R, and the non-phosphor layer part +48 and the overlapping part 14b are provided in the black light absorption layer 14 not on the entire surface of the phosphor screen 7, but in the periphery where a sufficient margin is required. In addition, the phosphor layer 13G may be provided only in a part of the middle part or in the middle part, and may be provided in at least one color phosphor layer, for example, a green-emitting phosphor layer 13G that has a greater effect on lowering color purity.
It may also be provided only around the periphery, and even in these cases, the above effects can be sufficiently obtained.

次に、比較実験例を示す。本発明による各実験例は、半
透明の黒色光吸収層１４として透過率を５０％に設定し
たブラックストライプ型のものを用い、各ａ、ｂＳｃ寸
法を次のように設定した。Next, a comparative experimental example will be shown. In each experimental example according to the present invention, a black stripe type translucent black light absorbing layer 14 with a transmittance of 50% was used, and the a and bSc dimensions were set as follows.

実験例１ 中央部　ｃ＝７０％、ａ＝１０％、２ｂ＝　４０％周辺
部　Ｃ＝５０％、ａ＝１０％、２ｂ＝　４０％実験例２ 中央部　Ｃ＝７０％、ａ＝１０％、２ｂ＝４．０％周辺
部　Ｃ＝５０％、ａ＝３０％、２ｂ＝　２０％実験例３ 緑色発光の蛍光体層１３Ｇと青色発光の蛍光体層１３Ｂ
１緑色発光の蛍光体層１３Ｇと赤色発光の蛍光体層１３
Ｒとの間のみ、 中央部　ｃ−７０％、ａ−１０％、、２ｂ＝４０％コー
ナ部　ｃ−５０％、ａ−１０％、２ｂ＝　４０％とし、
他の間はｂ÷０とした。Experimental example 1 Central part c=70%, a=10%, 2b=40% Peripheral part C=50%, a=10%, 2b=40% Experimental example 2 Central part C=70%, a=10%, 2b=4.0% peripheral area C=50%, a=30%, 2b=20% Experimental example 3 Green-emitting phosphor layer 13G and blue-emitting phosphor layer 13B
1 Green-emitting phosphor layer 13G and red-emitting phosphor layer 13
Only between R, center part c-70%, a-10%, 2b = 40%, corner part c-50%, a-10%, 2b = 40%,
For other intervals, b÷0 is used.

また、従来例による実験例としては、第３図の不透明な
黒色光吸収層１４を有するものではＣ＝５０％に設定し
たブラックストライプ型のものを用い、第４図の半透明
な黒色光吸収層１４を有するものではｃ＝５０％、透過
率を５０％に設定したブラックストライプ型のものを用
いた。そして、これらの白色輝度、外光反射率、色純度
余裕度を表のように測定、比較した。この色純度余裕度
は単色が均一にとれる偏向ヨークの移動幅（恥）によっ
て測定した。In addition, as an experimental example based on the conventional example, the one with the opaque black light absorption layer 14 shown in FIG. For the one having layer 14, a black stripe type one with c=50% and transmittance set to 50% was used. Then, the white luminance, external light reflectance, and color purity margin were measured and compared as shown in the table. This color purity margin was measured by the movement width (shame) of the deflection yoke that allows a uniform color to be obtained.

（以下次頁） 実験例１では、輝度向上を維持しつつ、実用上許容し得
るレベルの色純度余裕度を確保している。(See next page) In Experimental Example 1, a practically acceptable level of color purity margin was secured while maintaining brightness improvement.

実験例２の場合も、 している。Also in the case of Experimental Example 2, are doing.

充分な色純度余裕度を示 １ 実験例３の場合も、従来例と比較して、色純度余裕度の
向上を示している。Indicating Sufficient Color Purity Margin 1 Experimental Example 3 also shows an improvement in color purity margin compared to the conventional example.

この実験は、ブラックストライプ型について述べたが、
ブラックマトリックス型においても同様である。上記実
施例では黒色光吸収層の透過率を５０％としたがこの透
過率は各寸法、ａＳｂ。This experiment described the black stripe type,
The same applies to the black matrix type. In the above example, the transmittance of the black light absorbing layer was set to 50%, but this transmittance was different for each dimension and aSb.

Ｃの値によって適宜選択すれば良いことは言うまでもな
い。It goes without saying that it may be selected appropriately depending on the value of C.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、黒色光吸収層は、その無蛍光体層部で
は単にガートバンド機能のみを有し、重合部では発光に
寄与すると共に、ある程度のガートバンド機能を有する
ことにより、最もミスランディングの可能性の高い各蛍
光体層間の間隙では蛍光体層が存在しないため、色純度
の低下を生ぜず、充分なガートバンド機能を確保でき、
色純度を効果的に上げることができる。According to the present invention, the black light absorbing layer has only a guard band function in its non-phosphor layer part, and contributes to light emission in its polymerized part and has a guard band function to some extent, so that it is most likely to cause mislanding. Since there is no phosphor layer in the gaps between each phosphor layer where there is a high possibility of
Color purity can be effectively increased.

また、重合部には蛍光体層があるが、半透明の黒色光吸
収層が存在するため、ある程度のガートバンド機能を果
しつつ、同時に輝度の向上に寄２ 与し、大幅な輝度向上を得ることができる。In addition, although there is a phosphor layer in the polymerization part, there is also a translucent black light absorption layer, which functions as a guard band to some extent and at the same time contributes to improving the brightness, resulting in a significant brightness improvement. Obtainable.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のカラー受像管の一実施例を示す要部の
断面図、第２図は従来のカラー受像管の断面図、第３図
および第４図は従来のカラー受像管の一部を示す断面図
である。 ７・・蛍光体スクリーン、１３Ｂ　、　　１３Ｇ　、　
　１３Ｒ・・蛍光体層、１４・・黒色光吸収層、１４ａ
　　・・無蛍光体層部、１４ｂ　・・重合部、１５・・
間隙。FIG. 1 is a cross-sectional view of essential parts showing an embodiment of the color picture tube of the present invention, FIG. 2 is a cross-sectional view of a conventional color picture tube, and FIGS. 3 and 4 are parts of a conventional color picture tube. FIG. 7. Phosphor screen, 13B, 13G,
13R...phosphor layer, 14... black light absorption layer, 14a
...Non-phosphor layer part, 14b ...Polymerization part, 15...
gap.

Claims (1)

【特許請求の範囲】[Claims] （１）青、緑、赤の各色にそれぞれ発光する蛍光体層を
ストライプ状またはドット状に形成すると共に、この各
蛍光体層間に黒色光吸収層をストライプ状またはマトリ
ックス状に形成した蛍光体スクリーンを備えたカラー受
像管において、前記黒色光吸収層を半透明とし、かつ、
前記各蛍光体層の少なくとも一部の隣り合う蛍光体層間
に間隙を形成して、この間隙部分に位置する黒色光吸収
層には、黒色光吸収層のみの所定幅の無蛍光体層部と、
この無蛍光体層部の縁部で蛍光体層の縁部と重なった所
定幅の重合部とを設けたことを特徴とするカラー受像管
。(1) A phosphor screen in which phosphor layers that emit light in blue, green, and red colors are formed in stripes or dots, and a black light absorption layer is formed in stripes or in a matrix between each phosphor layer. In a color picture tube, the black light absorption layer is semitransparent, and
A gap is formed between at least some of the adjacent phosphor layers of each of the phosphor layers, and the black light absorbing layer located in the gap includes a non-phosphor layer portion of a predetermined width consisting only of the black light absorbing layer. ,
A color picture tube characterized in that an overlapping part of a predetermined width is provided at the edge of the non-phosphor layer and overlaps with the edge of the phosphor layer.
JP1195211A 1989-07-27 1989-07-27 Color television picture tube Pending JPH0359930A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1195211A JPH0359930A (en) 1989-07-27 1989-07-27 Color television picture tube
EP90114172A EP0410386B1 (en) 1989-07-27 1990-07-24 Color picture tube
DE69008636T DE69008636T2 (en) 1989-07-27 1990-07-24 Color picture tube.
US07/557,066 US5045750A (en) 1989-07-27 1990-07-25 Color picture tube having a phosphor screen with a semitransparent black light absorption
CN90104993A CN1018407B (en) 1989-07-27 1990-07-26 Colour picture tube
KR1019900011607A KR910003737A (en) 1989-07-27 1990-07-27 Cala Award House

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1195211A JPH0359930A (en) 1989-07-27 1989-07-27 Color television picture tube

Publications (1)

Publication Number Publication Date
JPH0359930A true JPH0359930A (en) 1991-03-14

Family

ID=16337308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1195211A Pending JPH0359930A (en) 1989-07-27 1989-07-27 Color television picture tube

Country Status (6)

Country Link
US (1) US5045750A (en)
EP (1) EP0410386B1 (en)
JP (1) JPH0359930A (en)
KR (1) KR910003737A (en)
CN (1) CN1018407B (en)
DE (1) DE69008636T2 (en)

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KR960016719B1 (en) * 1993-02-08 1996-12-20 마쯔시다덴기산교 가부시기가이샤 Electron beam display and method of manufacturing the same
DE69507874T2 (en) * 1994-12-26 1999-07-29 Toshiba Kawasaki Kk Screen and method of making the same
KR19990072174A (en) * 1996-10-17 1999-09-27 요트.게.아. 롤페즈 Color display device with color-filter layers
KR19990072175A (en) * 1996-10-17 1999-09-27 요트.게.아. 롤페즈 Color display device with color-filter layers
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Also Published As

Publication number Publication date
CN1018407B (en) 1992-09-23
DE69008636T2 (en) 1994-10-20
US5045750A (en) 1991-09-03
KR910003737A (en) 1991-02-28
EP0410386A3 (en) 1991-08-14
DE69008636D1 (en) 1994-06-09
CN1050467A (en) 1991-04-03
EP0410386A2 (en) 1991-01-30
EP0410386B1 (en) 1994-05-04

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